Electronics Forum | Fri Feb 15 00:39:09 EST 2002 | Jones
I've noticed that after we have switched to Transition Automation blades on our MPM screen printers that the stencils seem to be wearing out faster and I see a wavy rippling effect across the length of the stencil thats impacted by the squeege blade.
Electronics Forum | Thu Apr 14 13:10:49 EDT 2005 | Shean Dalton
Hi John, A primary consideration is the type of flux you are using. If it's water soluble (organic acid) then cleaning is highly recommended. Any other flux that fails the copper mirror test, we'd strongly recommend cleaning. Passing the copper m
Electronics Forum | Mon May 14 03:21:20 EDT 2001 | Eyal Duzy
Phil, In the considerations you make for choosing an AOI tool, you should check what a vendor delivers today and what will it be able to deliver in the future. As the role of AOI in the SMT production line evolves from "detection" to "prevention"
Electronics Forum | Tue Oct 05 08:01:57 EDT 2010 | scottp
Have you confirmed in an SEM that the break is in the solder and not in the termination? If not in the termination, is it in the intermetallic rather than the bulk solder? It's unusual for the break to be in the solder joint when chips are knocked
Electronics Forum | Fri Feb 23 10:24:24 EST 2001 | johnthor
We still build a legacy product with a primitive backplane using silver plated fork terminals for outside world connections. After some 20 years of no problems the fork terminals on raw stock PCBs were black and almost unsolderable. Because of the
Electronics Forum | Mon Mar 30 08:11:22 EST 1998 | Derek Drabenstadt
Does anyone have any experience with fired-silver/platinum/palladium lead terminations soldering. I have had issues on nickel over gold plated boards but not with HASL'd boards with tin/lead pads. Is this the norm?
Electronics Forum | Mon Mar 21 12:02:09 EST 2005 | Rob
Hi Colin, Are you using the 1206 package with 4 elements or one of the higher density smaller packages? With the first type you can get them in both Convex or Concave terminations, with most of the solderability problems associated with using the C
Electronics Forum | Tue Oct 05 03:24:08 EDT 2010 | mskler
This breaks the soldering not the body of the part. It breaks 90 degree from the length of teh componet.Is there any diffrence if I will use the solder paste of the type 4 for the 0603 componet.
Electronics Forum | Wed Feb 21 19:55:12 EST 2001 | davef
References on corrosion are: * "ASM Corrosion Handbook No. 13" [0871700077]. * "Electronic Packaging and Corrosion" ME Nicholson [0871702916]. Please explain how you determined that you have silver-sulfide contamination. Where is the silver comin
Electronics Forum | Sat Feb 24 14:22:53 EST 2001 | johnthor
Well, here I am working Saturday. Seems my production Supervisor had the nerve to get sick on an overtime weekend and, for some peculiar reason, the execs expect the numbers to be met anyway. Go figure! Let me backtrack and clarify that it was th
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